Hydraulic Brake Adapters

Mixing bubble flare, inverted flare, metric and SAE ports is how brake jobs start leaking and wasting your time. Our stock of hydraulic brake adapters let you convert and join lines, tee into dual master cylinders and trailer circuits and match European, British and metric threads so your system seals up tight and gets back on the road.

33 results

Dual Master Cylinder Adapters

Dual Master Cylinder Adapters with Hex Face Seals

Towed Trailer Brake Tees

Inverted Seat Strap Tee Assemblies

European Line Connector Unions

British Line Connector Unions

Bubble Flare Unions

Male to Female Adapters

Standard Flare to Bubble Flare Adapters

Metric Female Hydraulic Brake Adapters

Inverted Flare Male to Female Adapters

Bubble Flare Male to Inverted Female Adapters

Dual Master Cylinder Adapters

Dual master cylinder adapters made from brass with a gold finish. Options include multiple male and female inch threads and tube OD connections for 3/16", 1/4" and 5/16". Durable brass construction provides corrosion resistance and reliable fluid line sealing for brake and hydraulic repair tasks.

Inverted Male Thread: 3/16" (9/16"-18)

Inverted Female Thread	Material	Color	Name	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (1/2"-20)	Brass	Gold	3/16" (9/16"-18) x 3/16" (1/2"-20) Dual Master Cylinder Adapter - 2 Pack	2	7913	Log in to view price
3/16" (9/16"-18) x 3/16" (1/2"-20) Dual Master Cylinder Adapter - 2 Pack Item #: 7913 Package Weight: 0.1 lbs View Product Details Log in to Order
3/16" (3/8"-24)	Brass	Gold	3/16" (9/16"-18) x 3/16" Dual Master Cylinder Adapter - 2 Pack	2	7911	Log in to view price
3/16" (9/16"-18) x 3/16" Dual Master Cylinder Adapter - 2 Pack Item #: 7911 Package Weight: 0.1 lbs View Product Details Log in to Order

Inverted Male Thread: 3/16" (9/16"-20)

Inverted Female Thread	Material	Color	Name	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (3/8"-24)	Brass	Gold	3/16" (9/16"-20) x 3/16" Dual Master Cylinder Adapter - 2 Pack	2	7910	Log in to view price
3/16" (9/16"-20) x 3/16" Dual Master Cylinder Adapter - 2 Pack Item #: 7910 Package Weight: 0.1 lbs View Product Details Log in to Order

Inverted Male Thread: 3/16" (3/8"-24)

Inverted Female Thread	Material	Color	Name	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/4" (7/16"-24)	Brass	Gold	3/16" x 1/4" Dual Master Cylinder Adapter - 2 Pack	2	7828	Log in to view price
3/16" x 1/4" Dual Master Cylinder Adapter - 2 Pack Item #: 7828 Package Weight: 0.1 lbs View Product Details Log in to Order

Inverted Male Thread: 1/4" (7/16"-24)

Inverted Female Thread	Material	Color	Name	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (3/8"-24)	Brass	Gold	1/4" x 3/16" Dual Master Cylinder Adapter - 2 Pack	2	7818	Log in to view price
1/4" x 3/16" Dual Master Cylinder Adapter - 2 Pack Item #: 7818 Package Weight: 0.1 lbs View Product Details Log in to Order

Inverted Male Thread: 1/4" (9/16"-18)

Inverted Female Thread	Material	Color	Name	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/4" (7/16"-24)	Brass	Gold	1/4" x 1/4" Dual Master Cylinder Adapter - 2 Pack	2	7908	Log in to view price
1/4" x 1/4" Dual Master Cylinder Adapter - 2 Pack Item #: 7908 Package Weight: 0.1 lbs View Product Details Log in to Order

Inverted Male Thread: 5/16" (1/2"-20)

Inverted Female Thread	Material	Color	Name	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (9/16"-18)	Brass	Gold	5/16" x 3/16" (9/16"-18) Dual Master Cylinder Adapter - 2 Pack	2	7912	Log in to view price
5/16" x 3/16" (9/16"-18) Dual Master Cylinder Adapter - 2 Pack Item #: 7912 Package Weight: 0.2 lbs View Product Details Log in to Order
3/16" (3/8"-24)	Brass	Gold	5/16" x 3/16" Dual Master Cylinder Adapter - 2 Pack	2	7909	Log in to view price
5/16" x 3/16" Dual Master Cylinder Adapter - 2 Pack Item #: 7909 Package Weight: 0.1 lbs View Product Details Log in to Order
1/4" (7/16"-24)	Brass	Gold	5/16" x 1/4" Dual Master Cylinder Adapter - 2 Pack	2	7829	Log in to view price
5/16" x 1/4" Dual Master Cylinder Adapter - 2 Pack Item #: 7829 Package Weight: 0.2 lbs View Product Details Log in to Order
3/8" (5/8"-18)	Brass	Gold	5/16" x 3/8" Dual Master Cylinder Adapter - 2 Pack	2	7915	Log in to view price
5/16" x 3/8" Dual Master Cylinder Adapter - 2 Pack Item #: 7915 Package Weight: 0.1 lbs View Product Details Log in to Order

Inverted Male Thread: 3/8" (5/8"-18)

Inverted Female Thread	Material	Color	Name	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
5/16" (1/2"-20)	Brass	Gold	3/8" x 5/16" Dual Master Cylinder Adapter - 2 Pack	2	7916	Log in to view price
3/8" x 5/16" Dual Master Cylinder Adapter - 2 Pack Item #: 7916 Package Weight: 0.1 lbs View Product Details Log in to Order

Inverted Male Thread: 7/16"-20

Inverted Female Thread	Material	Color	Name	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
1/4" (7/16"-24)	Brass	Gold	7/16" x 1/4" Dual Master Cylinder Adapter - 2 Pack	2	7732	Log in to view price
7/16" x 1/4" Dual Master Cylinder Adapter - 2 Pack Item #: 7732 Package Weight: 0.1 lbs View Product Details Log in to Order

Dual Master Cylinder Adapters with Hex Face Seals

Brass dual master cylinder adapters with hex face seals for 3/16", 1/4" and 5/16" tube connections. Gold finish provides corrosion resistance and helps ensure reliable sealing for brake lines.

Inverted Male Thread: 1/4" (7/16"-24)

Inverted Female Thread	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
5/16" (1/2"-20)	Brass	Gold	2	7917	Log in to view price
1/4" x 5/16" Dual Master Cylinder Adapter with Hex Face Seal - 2 Pack Item #: 7917 Package Weight: 0.1 lbs View Product Details Log in to Order

Inverted Male Thread: 5/16" (1/2"-20)

Inverted Female Thread	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (3/8"-24)	Brass	Gold	2	7817	Log in to view price
5/16" x 3/16" Dual Master Cylinder Adapter with Hex Face Seal - 2 Pack Item #: 7817 Package Weight: 0.1 lbs View Product Details Log in to Order
1/4" (7/16"-24)	Brass	Gold	2	7727	Log in to view price
5/16" x 1/4" Dual Master Cylinder Adapter with Hex Face Seal - 2 Pack Item #: 7727 Package Weight: 0.1 lbs View Product Details Log in to Order

Towed Trailer Brake Tees

Towed trailer brake tees are brass tube adapters for steel brake lines with inverted seat threads in common master cylinder ports. Gold finish resists corrosion and 150 psi rating suits towing and repair tasks. Options provide multiple thread sizes for compatibility.

Male Thread: 3/16"

Inverted Seat A	Inverted Seat B	Thread Size	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (7/16"-24)	3/16" (3/8"-24)	9/16"-20	Brass	Gold	2	7905	Log in to view price
3/16" x 3/16" Towed Trailer Brake Tee with 9/16"-20 Male Thread - 2 Pack Item #: 7905 Package Weight: 0.4 lbs View Product Details Log in to Order
3/16" (1/2"-20)	3/16" (3/8"-24)	3/8"-24	Brass	Gold	2	7900	Log in to view price
3/16" x 3/16" Towed Trailer Brake Tee with 3/8"-24 Male Thread - 2 Pack Item #: 7900 Package Weight: 0.1 lbs View Product Details Log in to Order

Male Thread: 1/4"

Inverted Seat A	Inverted Seat B	Thread Size	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (M12 x 1.0)	3/16" (3/8"-24)	7/16"-24	Brass	Gold	2	7898	Log in to view price
1/4" x 1/4" Towed Trailer Brake Tee with 7/16"-24 Male Thread - 2 Pack Item #: 7898 Package Weight: 0.2 lbs View Product Details Log in to Order
1/4" (7/16"-24)	3/16" (3/8"-24)	7/16"-24	Brass	Gold	2	7914	Log in to view price
3/16" x 3/16" Towed Trailer Brake Tee with 7/16"-24 Male Thread - 2 Pack Item #: 7914 Package Weight: 0.2 lbs View Product Details Log in to Order
1/4" (7/16"-24)	3/16" (3/8"-24)	9/16"-18	Brass	Gold	2	7904	Log in to view price
1/4" x 3/16" Towed Trailer Brake Tee with 9/16"-18 Male Thread - 2 Pack Item #: 7904 Package Weight: 0.4 lbs View Product Details Log in to Order
1/4" (9/16"-18)	3/16" (3/8"-24)	7/16"-24	Brass	Gold	2	7901	Log in to view price
1/4" x 3/16" Towed Trailer Brake Tee with 7/16"-24 Male Thread - 2 Pack Item #: 7901 Package Weight: 0.2 lbs View Product Details Log in to Order

Male Thread: 1/2"

Inverted Seat A	Inverted Seat B	Thread Size	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (9/16"-20)	3/16" (3/8"-24)	1/2"-20	Brass	Gold	2	7906	Log in to view price
3/16" x 3/16" Towed Trailer Brake Tee with 1/2"-20 Male Thread - 2 Pack Item #: 7906 Package Weight: 0.3 lbs View Product Details Log in to Order

Inverted Seat Strap Tee Assemblies

Inverted seat strap tee assemblies for tubing in 1/4" and 3/16" sizes. Brass construction with gold finish and internal thread, flat tee strap design and an 11/32" bolt hole. Durable for equipment maintenance; brass provides corrosion resistance and reliable seating for fittings.

Tube OD: 3/16"

Thread Type	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
Internal	Brass	Gold	2	7812	Log in to view price
3/16" Inverted Seat Strap Tee Assembly - 2 Pack Item #: 7812 Package Weight: 0.2 lbs View Product Details Log in to Order

Tube OD: 1/4"

Thread Type	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
Internal	Brass	Gold	2	7765	Log in to view price
1/4" Inverted Seat Strap Tee Assembly - 2 Pack Item #: 7765 Package Weight: 0.3 lbs View Product Details Log in to Order

European Line Connector Unions

European line connector union made from steel with M10 x 1.0 metric threads and 1 mm pitch. Bubble flare SC series design provides a sealed join between European-style lines and helps ensure reliable fluid connections for automotive and hydraulic repair tasks.

Thread Size: M10 x 1.0

Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
Steel	Silver	1	7941	Log in to view price
M10 x 1.0 European Line Connector Union Item #: 7941 Package Weight: 0.1 lbs View Product Details Log in to Order

British Line Connector Unions

British line connector union for 3/8"-24 British line fittings. Steel construction with ISO flare SB series profile provides durable connection and resists leakage in hydraulic or pneumatic lines. Suitable for industrial equipment maintenance and repair tasks.

Thread Size: 3/8"-24

Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
Steel	Silver	1	7940	Log in to view price
3/8"-24 British Line Connector Union Item #: 7940 Package Weight: 0.1 lbs View Product Details Log in to Order

Bubble Flare Unions

Brass bubble flare union for joining 3/16" metric brake tubing with an M10 internal thread. Gold finish and 3/16" bubble flare seat provide corrosion resistance and reliable sealing for brake line repairs and equipment maintenance.

Tube OD: 3/16"

Thread Size	Thread Type	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
M10	Internal	Brass	Gold	2	7975	Log in to view price
M10 Bubble Flare Union - 2 Pack Item #: 7975 Package Weight: 0.1 lbs View Product Details Log in to Order

Male to Female Adapters

Brass male-to-female adapter with M10 x 1.0 male thread and 3/8"-24 female thread for 3/16" tube applications. Gold finish resists corrosion and provides reliable connection for brake line and fluid system fittings. Useful for repair tasks and equipment maintenance.

Tube OD: 3/16"

Thread Size	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/8"-24	Brass	Gold	5	1442	Log in to view price
M10 x 1.0 Male x 3/16" (3/8"-24) Female Adapter - 5 Pack Item #: 1442 Package Weight: 0.3 lbs View Product Details Log in to Order

Standard Flare to Bubble Flare Adapters

Brass adapter converting 3/16" inverted flare brake fittings to 3/16" bubble flare with M10 x 1.25 female seat and 3/8"-24 inverted female thread. Gold finish provides corrosion resistance and helps simplify brake line conversions for repair tasks.

Tube OD: 3/16"

Bubble Flare Seat	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (M10 x 1.25)	Brass	Gold	2	7970	Log in to view price
3/16" x 3/16" Standard Flare to Bubble Flare Adapter - 2 Pack Item #: 7970 Package Weight: 0.1 lbs View Product Details Log in to Order

Metric Female Hydraulic Brake Adapters

Metric female hydraulic brake adapters in brass with gold finish, available with M11 x 1.5 or M12 x 1.0 male threads and M10 x 1.0 female thread. Designed for 3/16" tube and standard flare brake lines, provides corrosion resistance and reliable connection for brake system repairs.

Male Thread: M11 x 1.5

Tube OD	Thread Size	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16"	M10 x 1.0	Brass	Gold	2	7935	Log in to view price
M11 x 1.5 Male x 3/16" (M10 x 1.0) Female Adapter - 2 Pack Item #: 7935 Package Weight: 0.1 lbs View Product Details Log in to Order

Male Thread: M12 x 1.0

Tube OD	Thread Size	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16"	M10 x 1.0	Brass	Gold	2	7936	Log in to view price
M12 x 1.0 Male x 3/16" (M10 x 1.0) Female Adapter - 2 Pack Item #: 7936 Package Weight: 0.1 lbs View Product Details Log in to Order

Inverted Flare Male to Female Adapters

Inverted flare adapter for joining M10 x 1.0 male fittings to 3/16" tube with 3/8"-24 female threads. Brass construction with gold finish resists corrosion and provides reliable fluid connection. Useful for brake line and hydraulic repair tasks.

Tube OD: 3/16"

Thread Size	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/8"-24	Brass	Gold	5	1443	Log in to view price
M10 x 1.0 Inverted Flare Male x 3/16" (3/8"-24) Female Adapter - 5 Pack Item #: 1443 Package Weight: 0.2 lbs View Product Details Log in to Order

Bubble Flare Male to Inverted Female Adapters

Brass bubble flare male to inverted female adapter for 3/16" tube od with matching 3/16" external male and inverted female threads. Gold finish provides corrosion resistance and the flared connection helps create a secure, leak-resistant joint for brake and fuel line repair tasks.

Inverted Male Thread: 3/16" (3/8"-24)

Inverted Female Thread	Material	Color	Package Qty	Item #	Price Want to view pricing for this product? Log In or Create Login Not a Kimball Midwest Customer? Register
3/16" (3/8"-24)	Brass	Gold	5	1441	Log in to view price
3/16" Bubble Male x 3/16" Inverted Female Adapter - 5 Pack Item #: 1441 Package Weight: 0.2 lbs View Product Details Log in to Order